JPH04229005A - Switchboard - Google Patents

Abstract

PURPOSE:To provide a switchboard in which manual operation of protector circuit breaker, take-off circuit breaker, electric chamber and electric chamber is facilitated. CONSTITUTION:In the inventive switchboard, a network transformer 24 is made horizontal with low profile and network buses 35 are arranged thereon whereas a protector circuit breaker 33 and a take-off circuit breaker 34 are arranged, respectively, in electric chambers 8, 10 in front of a switchgear corresponding to the network bus. According to the invention, the circuit breakers 33, 34, the electric chamber 8, 10, and the like can be installed within easy access of an operator who can thereby manually operate the protector circuit breaker 33, the take-off circuit breaker 34 and the like, resulting in the improvement of operability.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention particularly relates to a power distribution board with an improved arrangement of network power receiving and substation equipment.

0002

2. Description of the Related Art In cities, three-dimensional use of land is becoming popular, and buildings are becoming taller. In high-rise buildings, the power load distribution increases vertically, the load capacity is extremely large, and moreover, many buildings are of public importance, so there is a strong demand for reliable and safe power supplies. Furthermore, since the equipment is located in a dense urban area, it is desired that the installation area be as small as possible. For places where there is a large load in one place, such as a building or factory facility, a network power reception system with high supply reliability is optimal.

[0003] The network power reception system receives power from a power supply substation through 2 to 4 lines of 22KV or 33KV distribution lines.
Only a power receiving disconnector is installed on the primary side of the network transformer, and a fuse and protector circuit breaker are installed for each network transformer on the secondary side, and the load side is connected in parallel with the network bus, and the network In this method, several distribution lines connected to the bus bar supply loads in various directions. Incidentally, as an example of the spot network power receiving system, Japanese Patent Laid-Open No. 62-60937 can be mentioned.

[0004] In this network power receiving system, for example, if a short circuit occurs on the primary or secondary side of a network transformer, even if the faulty circuit is disconnected, power is supplied from the healthy line.
Since it prevents power outages to the load, the reliability of the power supply is high, which meets customer needs, and demand has increased recently.

[0005] In the network power receiving system, the network transformer, protector circuit breaker, and takeoff circuit breaker are housed in separate distribution panels, but the network transformer, protector, and takeoff circuit breaker are connected through the distribution line. Ta.

[0006]

[Problem to be Solved by the Invention] For this reason, simply installing these distribution boards not only requires a significantly large installation area for network power receiving equipment, but also requires the installation of power distribution lines and network busbars when connecting multiple distribution boards. The wiring structure became complicated, and wiring work was not easy.

Furthermore, during maintenance and inspection, the network transformer, protector circuit breaker, and take-off circuit breaker are separated, making maintenance and inspection difficult. It is conceivable that usability, such as operability, may deteriorate. Further, in the switchboard disclosed in Japanese Utility Model Application Publication No. 56-100006, the network busbars are arranged high, so that problems similar to those described above arise.

[0008] An object of the present invention is to provide a switchboard that is easy to use by improving the operability of the circuit breaker.

Another object of the present invention is to provide a power distribution board that simplifies the arrangement of busbars and electrical equipment to facilitate connection work.

Still another object of the present invention is to provide a power distribution board in which the installation area of power receiving and transforming equipment is significantly reduced.

[0011]

[Means for Solving the Problems] The switchboard of the present invention includes a transformer room formed in the switchboard, a conductive room formed on the upper side of the transformer room, an electrical room on the side of the switchboard, and horizontally arranged in the transformer room. a transformer arranged horizontally, a busbar arranged in a conductive room corresponding to the horizontally arranged transformer, and a circuit breaker arranged in the electrical room corresponding to the busbar installation part corresponding to the horizontally arranged transformer. It's about being prepared.

0012

[Function] As a result, the height of the transformer room is significantly reduced by keeping the longitudinal direction of the transformer horizontal, and the busbar is installed in the conductive room placed above the transformer room, corresponding to the busbar installation part mentioned above. The circuit breaker can now be placed in the electrical room where the circuit breaker is placed, and the circuit breaker, electrical room, etc. can be installed within the reach of the worker, allowing the worker to manually move the circuit breaker in and out of the electrical room, etc. Or, since I can now operate the electrical room,
The switchboard of the present invention not only has improved operability and ease of use, but also allows the installation area of power receiving and transforming equipment to be significantly reduced.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A network switchboard according to an embodiment of the present invention will be explained below with reference to FIGS. 1 to 5.

FIG. 1 is a reference transparent diagram shown to facilitate understanding of the configuration of a network switchboard according to the present invention, and there are some parts that do not necessarily correspond to FIGS. 2 to 12. Figures 2 and 3
FIG. 2 is a view of the network switchboard of FIG. 1 according to an embodiment of the present invention when viewed from the left side, that is, from the front and from the back. The conductors in FIG. 3 are shown only in a high-voltage manner for ease of understanding. 4 and 5 are cross-sectional views taken along lines A-A and B-B in FIGS. 2 and 3.

In the drawings, a network switchboard 1 has a box-like structure comprising a first switchboard unit 2 and a second switchboard unit 3 made of steel plates. Both units 2 and 3
is configured to be separable. A partition plate 5, for example, a steel plate, is provided in the middle of the network switchboard 1. A transformer chamber 6 is formed below the partition plate 5. The transformer room 6 has three doors 4A attached to the network switchboard 1 so as to be openable and closable. A handle 4B is attached to the door 4A. Two partition plates 5A and 5B are provided above the partition plate 5 at a predetermined interval to form a conductor chamber 7 and an electrical chamber 8 and a switching chamber 9 on the left and right sides of the conductor chamber.

The electrical rooms 8 and 10 are separated by a steel partition plate 5C to form two independent rooms. On the surface of these electrical rooms 8, one and three doors 8A and 8B are attached to a network switchboard so as to be openable and closable. Each electrical room 10 constitutes an independent room according to three doors 8B. The doors 8A, 8B are provided with a handle 8C, a gauge 8D, and a square opening 8E. A ventilation duct 13 is provided on the roof surface 12 corresponding to the electrical room 8 and the switching room 10.

Each electrical room 8, 10, switching room 9, and ventilation duct 13 communicate with each other. Back side 2 of transformer room 6
An intake port 14 and an exhaust port 15 are formed in the X and ventilation duct 13. A plurality of small holes 16 are bored in the partition plate 5. Therefore, the air flows toward the intake port 1 as shown by the arrow direction Z.
4, passes through a plurality of small holes 16 and exits to the outside air from an exhaust port 15. A blower 17 attached to the intake port 14 is rotated by a motor 18.

Three-phase network distribution lines 20A, 20B
, 20C is an elbow-shaped cable head 2 as shown in Fig. 3.
1 conductor. Elbow type cable head 2
1 is arranged in the switching room, one end penetrates the ceiling, and the other end is connected to the load switch 22 inside the switching room via a bushing. One end of the load switch 22 is connected via a bushing 23 provided on the partition plate 5 to a primary terminal 25 of a three-phase network transformer 24 in the transformer room. Note that a disconnecting section may be used in place of the load switch. Further, the above-mentioned network wiring 20 may be connected to the primary terminal 25 of the network transformer 24 from the lower side of the network switchboard 1.

For example, the network transformer 24 has a current of about 22,000 V and 52 A on the primary side, and a voltage of about 41 A on the secondary side.
Converts to 5V, 2800A current and voltage. The network transformer 24 of each phase is a so-called horizontally arranged network transformer 24 in which the longitudinal direction L of the network transformer is arranged horizontally. The three-phase coils 24A of the horizontally arranged network transformer 24 are arranged at predetermined intervals in the width direction Y of the network switchboard 1. 3-phase coil 24A has iron core 2
A conductor wire is wound around 4B. Further, the longitudinal direction L of the network transformer may be arranged along the width direction Y of the network switchboard 1. The network transformer 24 arranged horizontally is supported by a support 26, and the support 26 is rotated in the directions of the arrows 1X and 2X by wheels 27 attached to the support 26.
, and can enter and exit the network switchboard 1. The arrow direction 1X is the front side, and the arrow direction 2X is the back side.

The lead-out conductor 29 connected to the secondary terminal 28 of the horizontally arranged network transformer 24 connects the fuse 31 and the protector current transformer 32 on the back side 2X of the electrical room 8.
It extends again to the front side 1X and is connected to the primary side of the protector circuit breaker 33. Further, 29A is a neutral point conductor.

A protector circuit breaker 33 is housed in the electrical room 8 with the door 8A open. A take-off circuit breaker 34 is arranged in an electrical room 10 with three doors 8B on the left side of the door 8A open. Both electrical rooms are separated by partition plates and are independent, and when the doors 8A and 8B are closed, the instruments 50 provided in the protector circuit breaker 33 and the take-off circuit breaker 34 are inserted into the opening 8E, and can be operated from the outside. can. The protector circuit breaker 33 and the take-off circuit breaker 34 are connected to each circuit breaker 33 and 3 according to the access to and from the electrical room 8 and 10 from the outside.
The primary and secondary side terminals 4 are electrically connected to and separated from a disconnection section 39 provided in the electrical room 8 shown in FIGS. 9 to 11. Output conductors 36 and 37 connected to the disconnection section 39 are connected to the network bus bar 35.

Multi-phase horizontally arranged network transformer 2
Network bus line 35 extending along the arrangement direction of No. 4
The plurality of phases are arranged at predetermined intervals in the longitudinal direction L of the network transformer 24 , and a protector circuit breaker 33 and a takeoff circuit breaker 34 are connected to the network bus 35 . As shown in FIG.
width part 1 in the height direction of the strip conductor and in the direction perpendicular to this.
The strip conductor 35A is arranged so that L and the thickness part T are aligned, but conversely, as shown in FIG. You may. That is, the plurality of phases of the network bus 35 may be arranged vertically, that is, on a staircase, as shown in FIG. As shown in FIGS. 4 and 5, the protector circuit breaker 33 and the take-off circuit breaker 3
4 is arranged along the extension direction of the network bus line 35. A plurality of secondary and primary side lead-out conductors 36B and 3 of the protector circuit breaker 33 and the take-off circuit breaker 34
7A is arranged along the line extension direction of the network bus line 35. A plurality of secondary side and primary side lead-out conductors 36B and 37A of the protector breaker 33 and the take-off breaker 34 are connected to the four phases of the network bus bar 35, and the secondary side lead-out conductors 36B and 37A are connected to the four phases of the network bus bar 35, as shown in FIGS. By arranging the pull-out position of 36B at a higher position than the pull-out position of the primary drawer conductor 37A, the instruments 50 of the protector circuit breaker 33 and the take-off circuit breaker 34 can be positioned in the same direction on the doors 8A and 8B. . The plurality of secondary side lead-out conductors 37B of the take-off circuit breaker 34 extend upward on the side opposite to the network transformer 24, and are connected to the load conductor 3 in the ventilation duct 13.
8, and a load conductor 38 extends outward from the front side 1X of the network switchboard 1. Also, the secondary side drawer conductor 3
7B may be placed along the network busbar 35.

Next, the effects of the network switchboard of the present invention will be explained.

In this embodiment, the horizontally arranged network transformer 24 has a much lower height than a vertical transformer in which the longitudinal direction of the transformer is arranged vertically. The protector circuit breaker 33 and take-off circuit breaker 34 placed on one side of the network busbar 35 can now be installed within the reach of the worker, so the worker can manually to move the protector circuit breaker 33 and take-off circuit breaker 34 into and out of the electrical rooms 8 and 10, or to move the
50, the protector circuit breaker 33, the take-off circuit breaker 34, the electrical rooms 8, 10, etc. have become easier to operate, and the user-friendliness has improved.

The range of height that the worker can reach is the support stand 2.
The protector circuit breaker 33 and the take-off circuit breaker 34 may be provided on the horizontally arranged network transformer 24 supported by the network transformer 6 within a height dimension that is the sum of the diameter of the network transformer coil 24A. Below this size range, the network transformer 24 is installed and the protector circuit breaker 33 and take-off circuit breaker 34 cannot be placed. Moreover, if it is above the above-mentioned size range, the worker's hands cannot reach electrical equipment such as the protector circuit breaker 33 and the take-off circuit breaker 34, making it difficult to work.

Since the fuse 31 and the protector current transformer 32 are also installed within the reach of the worker, it goes without saying that the same effects as described above can be achieved. Furthermore, the fuse 31 and protector current transformer 32 are centrally arranged on the back side of the network switchboard 1, which not only makes installation and maintenance inspection easier, but also improves the appearance on the door side and surface side. Ta.

In this embodiment, as a result of drawing out the secondary side lead-out conductor 37B of the take-off circuit breaker 34 to the rooftop side, as shown in FIG.
As shown in FIG. 3, the network bus bar 35 and the secondary and primary side draw-out conductors 36B of the protector circuit breaker 33 and the take-off circuit breaker 34, which have different draw-out positions, are arranged correspondingly on the transformer room.
, 37A can be arranged in a straight line and can be directly connected, which not only simplifies the conductor arrangement configuration, but also differentiates the primary and secondary side lead-out conductors 37A and 36B by different lead-out positions. Because it is easier to connect, there are fewer miswirings. Even in the especially dark network switchboard 1, the location of the protector circuit breaker 33 or the take-off circuit breaker 34 can now be immediately determined, which not only makes assembly, maintenance and inspection work much easier, but also reduces incorrect wiring. .

In this embodiment, if the secondary lead-out conductor 37B of the take-off circuit breaker 34 is pulled out upward, which is the side opposite to the network transformer 24, electrical safety can be achieved without causing an insulation problem with the network transformer 24. It is.

Further, as shown in FIGS. 5 and 11, the secondary side lead-out conductor 37B of the take-off circuit breaker 34 extends upward, which is the side opposite to the network transformer 24, and connects to the load conductor 38 in one ventilation duct. The secondary side lead-out conductor 37B and the load conductor 38 will not collide with the network bus bar 35 and the network transformer 24, will not cause insulation problems, and will be electrically safely connected to the outside from the front side 1X of the network switchboard 1. Therefore, the network busbars 35 can be safely extended in series.

As a result, the series network bus 35
It is now possible to connect the three network lines 22KV network switchboards 1A, 1B, 1C, the private generator 40 adjacent to the network switchboard, and the power factor capacitor 41 to configure a network power receiving and transforming system. Electrical equipment such as a private generator 40, a power factor capacitor 41, etc. can now be integrated into the network, the installation area of the network power receiving and transforming system can be further significantly reduced, and the distribution line system can now be simplified.

[0031] Also, the electrical equipment 3
3, 34 can now be placed, and these electrical devices 2
4, 33, 34 and the network bus 35 can be consolidated in one location, not only can the installation area of the network power receiving system be significantly reduced, but also the maintenance and inspection of electrical equipment 24, 33, 34, etc. can be done in one location. Because I can,
Maintenance and inspection work has become significantly easier.

Furthermore, the terminals and lead-out conductors of the network transformer 24, electrical equipment 33, 34 connected to the network bus 35 are arranged perpendicular to the network bus 35, do not cross electrically, and are magnetically This eliminates the occurrence of variable force and causes no adverse effects on the electrical equipment 33, 34, etc.

As an embodiment different from the embodiment described above, a transformer chamber 6, a conductor chamber 7, and electrical chambers 8, 10 are formed on the upper and lower sides of the network switchboard 1, and the transformer chamber 6 and the conductor chamber 7 are and electrical room 8, horizontally arranged network transformer 24, network busbar 35, and protector circuit breaker 33.
and a take-off circuit breaker 34. Network busbar 35, protector breaker 33 and take-off breaker 3
4 is arranged corresponding to the horizontally arranged network transformer 24.

In this case, the primary terminals 36A and 37A of the protector breaker 33 and the take-off circuit breaker 34 are arranged above the secondary terminals 36B and 37B, and the primary terminal 36A of the protector breaker 33 and the secondary In addition to preventing the side terminals 37B from electrically crossing each other, the load side lead-out conductor connected to the secondary side terminal 37B of the take-off circuit breaker 34 is connected through the floor surface on the opposite side to the network transformer 24. Either by pulling it out to the outside, or by pulling it out along the floor or along the network busbar 35.

In this embodiment, the network switchboard 1 is divided into a first switchboard unit 2 having a protector circuit breaker 33 and a second switchboard unit 3 having a take-off circuit breaker 34 . This means that when using a network power receiving and substation system with increased electric capacity, the network transformer 24 and protector circuit breaker 3 with increased electric capacity are used.
Use 3. The network transformer 24 and protector circuit breaker 33 are larger than the normal network transformer 24 and protector circuit breaker 33, and are large enough to accommodate the network transformer 24 and protector circuit breaker 33, which have become larger in accordance with the increase in electric capacity. Since it is now possible to use the first switchboard unit 2 that has been changed to Since the network switchboard 1 can be assembled, the efficiency of assembly work can be significantly improved.

In the motor 18 of this embodiment, when a current exceeding a certain level flows to the secondary side of the network transformer 24, the current transformer 31 detects this, closes a switch (not shown), and drives the motor 18. Alternatively, a thermostat is installed inside the transformer, and when the temperature inside the transformer exceeds a certain temperature, the thermostat operates, drives the motor 18, rotates the blower 17, and blows the outside air in the direction of the arrow. The current flows in direction Z, and the temperature in each room drops, allowing the network transformer 24, protector circuit breaker 33, take-off circuit breaker 34, etc. to be used up to the rated current limit.

Although the embodiments described above have been described with respect to a network switchboard, they may also be implemented in a switchboard using a transformer. In other words, it is a power distribution board for receiving power from an external power source, stepping down the voltage, and supplying power to multiple loads. A multi-phase transformer is placed horizontally at the bottom of the power distribution board, and a bus bar is located at the top of the power distribution board, which corresponds to the bus bar at the top of the power distribution board. A circuit breaker is installed in the electrical room on the front side of the switchboard to achieve the same effect as described above. In addition, when multiple circuit breakers with different performances are placed in an electrical room, by changing the pull-out positions of the primary and secondary lead-out terminals of each circuit breaker and connecting them to the bus bar, the circuit breakers with different performances can be placed in the same room in the electrical room. The circuit breaker, electrical room, etc. are now easier to use by allowing them to be placed in different directions.

In the switchboard shown in FIGS. 13 to 15, network transformers 24 are vertically arranged, and network busbars 35 are arranged along the longitudinal direction L of the network transformers 24 and along the arrangement direction of the network transformers 24. By connecting the protector circuit breaker 33 and the take-off circuit breaker 34 to the network bus 35, the protector circuit breaker 33 and the take-off circuit breaker 34 are placed perpendicular to the longitudinal direction L of the network transformer 24, and the protector circuit breaker is connected to the network bus 35 whose height is lowered. The protector circuit breaker 33 and the take-off circuit breaker 34 can now be connected, and the worker can now manually operate the protector circuit breaker 33, the take-off circuit breaker 34, etc. Furthermore, the fuse 31 and protector current transformer 32 connected to the secondary side lead-out conductor 36A of the network transformer 24 can now be installed from the front of the switchboard, making the installation process easier.

On the other hand, the four-phase network busbar 35 is arranged in an inclined manner to narrow the gap between the network transformer 24, the protector circuit breaker 33, and the takeoff circuit breaker 34, thereby reducing the size of the switchboard. Furthermore, the switchboard can be arranged in an inclined manner so that the network transformer protrudes from the back side of the switchboard, thereby reducing the height of the network transformer and downsizing the switchboard.

[0040]

As described above, according to the present invention, as a result of lowering the height by arranging the transformer horizontally at the bottom of the switchboard, the locations of bus bars and circuit breakers in the electrical room placed at the top of the switchboard can be adjusted. This has made it possible to install circuit breakers and other equipment within the reach of workers. As a result, workers can now manually operate circuit breakers and meters in the electrical room, making it easier to operate circuit breakers and the like, making the switchboard more convenient to use. In addition, the load side lead-out conductor of the circuit breaker can be pulled out in the opposite direction to the transformer, and the lead-out conductor bus bar of the circuit breaker can be arranged in a straight line, simplifying the conductor arrangement. Ta.

[Brief explanation of the drawing]

FIG. 1 is a reference see-through diagram when looking through a network switchboard shown as a reference diagram of the present invention.

FIG. 2 is a front view of the network switchboard of FIG. 1, which is an embodiment of the present invention, when viewed from the left (front) side.

FIG. 3 is a back view of the network switchboard of FIG. 1, which is an embodiment of the present invention, when viewed from the back side.

FIG. 4 is a sectional view taken along the line AA of the network switchboard of FIG. 2, which is an embodiment of the present invention.

FIG. 5 is a BB side sectional view of the network switchboard of FIG. 2, which is an embodiment of the present invention.

FIG. 6 is a side cross-sectional view of a band-shaped conductor used in the network busbar of FIGS. 4 and 5, which is an embodiment of the present invention.

FIG. 7 is a side cross-sectional view of a band-shaped conductor used in a network bus bar according to another embodiment of the present invention.

FIG. 8 is a schematic circuit diagram used in the network switchboard of FIG. 1, which is an embodiment of the present invention.

FIG. 9 is a schematic explanatory diagram showing wiring between the network transformer and protector circuit breaker of FIG. 1, which is an embodiment of the present invention.

FIG. 10 is a connection diagram of a protector circuit breaker used in the network switchboard of FIG. 1, which is an embodiment of the present invention.

FIG. 11 is a connection diagram of a take-off circuit breaker used in the network switchboard of FIG. 1, which is an embodiment of the present invention.

FIG. 12 is a schematic circuit diagram of a network power receiving and transforming system according to another embodiment of the present invention.

FIG. 13 is a front view showing the arrangement of a network transformer, a protector, and a take-off circuit breaker according to another embodiment of the present invention.

FIG. 14 is a layout diagram of a network transformer and a protector circuit breaker used in the embodiment of FIG. 13 of the present invention.

FIG. 15 is a layout diagram of the network transformer and take-off circuit breaker used in the embodiment of FIG. 13 of the present invention.

[Explanation of symbols]

1... Network switchboard, 6... Transformer room, 7... Conductor room,
8...Electrical room, 24...Network transformer, 33...Protector circuit breaker, 34...Take-off circuit breaker, 35...Network busbar.

Claims (16)

[Claims] Claim 1: A network switchboard in which electrical equipment connected to the secondary draw-out conductor of a network transformer and a network busbar is arranged, comprising: a transformer chamber formed within the network switchboard; and a conductive chamber formed above the transformer chamber. and an electrical room on the front side of the network switchboard corresponding to the conductive room,
A network transformer horizontally arranged in the transformer room,
A switchboard comprising: a network busbar disposed in the conductive room; and electrical equipment disposed in an electrical room corresponding to the network busbar. Claim 2: In a network switchboard in which electrical equipment connected to the network busbar and the secondary draw-out conductor of the network transformer is connected to the network busbar, the network switchboard is connected to the partition plate through a partition plate provided in the network switchboard. It is characterized by comprising a transformer room formed on the lower side for storing horizontally arranged network transformers, and an electrical room and a conductive room formed on the front side and back side of the network switchboard above the transformer room. Switchboard. 3. The electrical room is provided in an area that is the sum of a supporting stand, a horizontal network transformer supported by the supporting stand, and a diameter of the horizontal network transformer. switchboard. Claim 4: A network switchboard in which electrical equipment connected to the network busbar and the secondary draw-out conductor of the network transformer is connected to the network busbar, comprising: a transformer chamber formed in the network switchboard; and an upper side of the transformer chamber. A conductive room formed in the conductive room, an electrical room on the front side of the network switchboard corresponding to the conductive room, a network transformer horizontally arranged in the transformer room, a network busbar arranged in the conductive room, and a network busbar corresponding to the network busbar. A protector circuit breaker and a take-off circuit breaker are used as the electrical devices, and the network switchboard between the protector circuit breaker and the take-off circuit breaker can be separated. Features a switchboard. 5. In a network switchboard in which the secondary draw-out conductor of the protector circuit breaker whose primary side is connected to the secondary draw-out conductor of the network transformer and the primary draw-out conductor of the take-off circuit breaker are connected to the network bus bar, the network A transformer room formed in the switchboard, a conductive room formed above the transformer room, an electrical room on the front side of the network switchboard corresponding to the conductive room, a network transformer horizontally arranged in the transformer room, and the above-mentioned The network busbar placed in the conductive room, the protector breaker and take-off breaker placed in the electrical room, the secondary draw-out conductor of the protector breaker, and the primary draw-out conductor of the take-off breaker are changed in the draw-out position. A power distribution board characterized in that it is connected to a network busbar. [Claim 6] The primary side draw-out conductor is two of the network transformer.
In a network switchboard in which the secondary draw-out conductor of the protector circuit breaker connected to the next-side draw-out conductor and the primary draw-out conductor of the take-off circuit breaker are connected to the network bus bar, a transformer room formed in the network switchboard and a transformer room are provided. A conductive room formed on the upper side, an electrical room on the front side of the network switchboard corresponding to the conductive room, a network transformer horizontally arranged in the transformer room, a network busbar arranged in the conductive room, and an electrical room in the electrical room. A protector circuit breaker and a take-off circuit breaker are arranged, and the secondary draw-out conductor of the protector circuit breaker and the primary draw-out conductor of the take-off circuit breaker are connected to the network bus bar by changing the draw-out positions, and the load of the take-off circuit breaker is changed. A switchboard characterized in that a side lead-out conductor is arranged on the opposite side of a network transformer or along a network busbar. [Claim 7] The primary side draw-out conductor is 2 of the network transformer.
In a network switchboard in which the secondary draw-out conductor of the protector circuit breaker connected to the next-side draw-out conductor and the primary draw-out conductor of the take-off circuit breaker are connected to the network busbar, a transformer room formed in the network switchboard and the transformer A conductive room formed on the upper side of the room, an electrical room on the front side of the network switchboard corresponding to the conductive room, a network transformer horizontally arranged in the transformer room, a network busbar arranged in the conductive room, and the electrical room A network power receiving and transforming system is configured, comprising a protector circuit breaker and a take-off circuit breaker arranged in switchboard. Claim 8: In a network switchboard in which the secondary draw-out conductor of the protector circuit breaker and the primary draw-out conductor of the take-off circuit breaker are connected to the network bus bar, to which the secondary draw-out conductor and the primary draw-out conductor of the network transformer are connected. , a switchboard characterized in that network busbars are arranged in correspondence with horizontally arranged network transformers. Claim 9: The primary side draw-out conductor is 2 of the network transformer.
In a network switchboard where the secondary draw-out conductor of the protector circuit breaker connected to the next-side draw-out conductor and the primary draw-out conductor of the take-off circuit breaker are connected to the network bus, the network bus is arranged in correspondence with the horizontally arranged network transformer. A power distribution board characterized in that a secondary side draw-out conductor of the network transformer is extended to the back side of the network switchboard, and a protector current transformer and a fuse are connected to this draw-out conductor. Claim 10: In a network switchboard in which the primary draw-out conductor of a protector circuit breaker whose primary draw-out conductor is connected to the secondary draw-out conductor of a network transformer and the primary draw-out conductor of a take-off circuit breaker are connected to a network bus bar. , a transformer room housing network transformers arranged horizontally on the network switchboard, an electrical room formed on the upper side of the transformer room containing electrical equipment, and an air inlet and an exhaust air in the transformer room and the electrical room. A switchboard comprising a blower rotated by a motor at the intake port, and when a network transformer reaches a certain current or a certain temperature, the motor is driven and the blower is rotated to cool the interiors of both chambers. 11. In a network switchboard in which electrical equipment connected to the secondary side draw-out conductor of a network transformer and connected to a network bus bar is arranged, a transformer room formed in the network switchboard and an upper side of the transformer room are provided. A conductive room formed in the conductive room, an electrical room on the front side of the network switchboard corresponding to the conductive room, a network transformer horizontally arranged in the transformer room, a network busbar arranged in the conductive room, and a network busbar corresponding to the network busbar. What is claimed is: 1. A switchboard, characterized in that the electrical equipment is disposed in an electrical room, and is electrically connected to and separated from a disconnection section of the electrical room. 12. A power distribution board for receiving power from an external power source, stepping down the voltage, and supplying power to multiple loads, wherein a transformer is horizontally arranged at the bottom of the power distribution board, and a bus bar is connected to the transformer horizontally arranged at the top of the power distribution board. A power distribution board characterized in that a circuit breaker is arranged on a surface of the power distribution board corresponding to the busbar installation part at the top of the power distribution board. 13. A power distribution board for receiving power from an external power source, stepping down the voltage, and supplying power to a plurality of loads, wherein a transformer is horizontally arranged at the bottom of the power distribution board, and a bus bar is connected to the transformer horizontally arranged at the top of the power distribution board. , multiple circuit breakers with different performances were placed on the switchboard surface corresponding to the busbar installation part at the top of the switchboard, and the pullout positions of the primary and secondary side terminals of each circuit breaker were changed to connect them to the busbar. A switchboard featuring: 14. A power distribution board for receiving power from an external power source, stepping down the voltage, and supplying power to a plurality of loads, wherein a transformer is horizontally arranged at the bottom of the power distribution board, and a busbar is connected to the transformer horizontally arranged at the top of the power distribution board. , place multiple circuit breakers with different performance on the switchboard surface corresponding to the bus bar installation part on the top of the switchboard, and connect the multiple circuit breakers to the bus bar by changing the pull-out positions of the primary and secondary side pull-out terminals. A power distribution board characterized in that a load-side lead-out conductor connected to a secondary-side lead-out terminal of a circuit breaker that is not connected to a bus bar is pulled out on the side opposite to the transformer or along the bus bar. 15. A power distribution board for receiving power from an external power source, stepping down the voltage, and supplying power to a plurality of loads, wherein a transformer is arranged in the power distribution board, a bus bar is arranged in the direction in which the transformer is arranged, and the transformer and the bus bar are connected to each other. A switchboard characterized in that a circuit breaker is arranged on a switchboard surface corresponding to an installation part. 16. A power distribution board for receiving power from an external power supply, stepping down the voltage, and supplying power to multiple loads, wherein a transformer is arranged in the power distribution board, a bus bar is arranged in the direction in which the transformer is arranged, and the transformer and the bus bar are connected to each other. A plurality of circuit breakers are placed on the switchboard surface corresponding to the installation section, and the pull-out positions of the primary and secondary side pull-out terminals of the multiple circuit breakers are changed so that the multiple circuit breakers are placed in the same direction. A switchboard characterized by being connected to.